Book Image

Performance Testing with JMeter 2.9

By : Bayo Erinle
Book Image

Performance Testing with JMeter 2.9

By: Bayo Erinle

Overview of this book

Performance testing with JMeter 2.9 is critical to the success of any software product launch and continued scalability. Irrespective of the size of the application's user base, it's vital to deliver the best user experience to consumers. Apache JMeter is an excellent testing tool that provides an insight into how applications might behave under load enabling organizations to focus on making adequate preparations. Performance Testing with JMeter 2.9 is a practical, hands-on guide that equips you with all the essential skills needed to effectively use JMeter to test web applications using a number of clear and practical step-by-step guides. It allows you take full advantage of the real power behind Apache JMeter, quickly taking you from novice to master. Performance Testing with JMeter 2.9 begins with the fundamentals of performance testing and gets you acquainted with JMeter. It will guide you through recording realistic and maintainable scripts. You will acquire new skills working with tools such as Vagrant, Puppet, and AWS, allowing you to leverage the cloud to aid in distributed testing. You will learn how to do some BeanShell scripting and take advantage of regular expressions, JMeter properties, and extension points to build comprehensive and robust test suites. Also, you will learn how to test RESTful web services, deal with XML, JSON, file downloads/uploads, and much more. Topics like resource monitoring, distributed testing, managing sessions, and extending JMeter are also covered. Performance Testing with JMeter 2.9 will teach you all you need to know to take full advantage of JMeter for testing web applications, dazzle your co-workers, and impress your boss! You will go from novice to pro in no time.
Table of Contents (14 chapters)

Handling RESTful web services

An increasing number of applications are shifting to RESTful web services due to their simplicity to build, test, and consume compared to their SOAP counterparts. All REST communication is done over the HTTP protocol between the parties involved. HTTP is used for CRUD (create, read, update, and delete) operations. The built-in HTTP Request sampler in JMeter is more than up to the task. It supports GET, POST, PUT, and DELETE operations, among other things. The body of the request can be in XML or JSON format. An HTTP Header Manager component can be used to send additional HTTP header attributes if needed.

In our sample, we are going to create a new person in our sample application using a POST request, and then verify that the person was actually created using a GET request.

  1. Create a new test plan.

  2. Add a new Thread Group (by navigating to Test Plan | Add | Thread Group).

  3. Add an HTTP Request sampler (this retrieves all the people records in our application so far...